Staged combustion

Staged combustion

Staged combustion is a method for reducing Nitrogen oxides (NOX) emissions from combustion. There are two methods:
* Air staged supply
* Fuel staged supply

Air staged supply

Characteristics:
* NOX reduction rate from 50-75% is possible.
* Spatial separation of primary and secondary air.
* Control of combustion performance with primary air.
* Secondary air supply for burnout.
* Simple configuration.
* Application at small scale combustions.

Fuel staged supply

Characteristics:
* NOX reduction rate from 50-75% is possible.
* Minor temperature instabilities at the reduction zone.
* Lower temperature necessary.
* Complex constructive configuration.
* Application at large scale combustions.


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